Effects of interfacial transition zones on the stress-strain behavior of modeled recycled aggregate concrete

Jianzhuang Xiao*, Wengui Li, David J. Corr, Surendra P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

120 Scopus citations

Abstract

Based on nanoindentation tests and analysis, the constitutive relationship of the Interfacial Transition Zones (ITZs) in Recycled Aggregate Concrete (RAC) is put forward. Together with the meso/micro-scale mechanical properties of each phase in Modeled Recycled Aggregate Concrete (MRAC), the plastic-damage constitutive models are employed in numerical studies on MRAC under uniaxial compression and uniaxial tension loadings to predict the overall mechanical behavior, particularly the stress-strain relationship. After the calibration and validation with the experimental results, a parametric study has been undertaken to analyze the effects of ITZs and new mortar matrix on the stress-strain relationship of MRAC. It is revealed that the mechanical properties of new mortar matrix and relative mechanical properties between ITZs and mortar matrices play a significant role in the overall stress-strain relationship and failure patterns of MRAC under both uniaxial compression and uniaxial tension loadings.

Original languageEnglish (US)
Pages (from-to)82-99
Number of pages18
JournalCement and Concrete Research
Volume52
DOIs
StatePublished - 2013

Keywords

  • Aggregate (D)
  • Concrete (E)
  • Finite element analysis (C)
  • Interfacial transition zone (B)
  • Nanoindentation

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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